08_P28InstructorSolution - 8.28. Model: earth rotates....

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8.28. Model: Treat the man as a particle. The man at the equator undergoes uniform circular motion as the earth rotates. Visualize: Solve: The scale reads the man’s weight G , Fn = the force of the scale pushing up against his feet. At the north pole, where the man is in static equilibrium, PG 735 N nFm g == = At the equator, there must be a net force toward the center of the earth to keep the man moving in a circle. The r - axis points toward the center, so 22 2 GE E P r FFnmr nm gmrnmr ω ωω =−= ⇒= −
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This note was uploaded on 12/10/2011 for the course PHYS 1211 taught by Professor Geller during the Fall '09 term at University of Georgia Athens.

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